sim/common/sim-n-core.h

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #ifndef N
  23 #error "N must be #defined"
  24 #endif
  25
  26 #include "sim-xcat.h"
  27
  28 /* NOTE: see end of file for #undef of these macros */
  29 #define unsigned_N XCONCAT2(unsigned_,N)
  30 #define T2H_N XCONCAT2(T2H_,N)
  31 #define H2T_N XCONCAT2(H2T_,N)
  32
  33 #define sim_core_read_aligned_N XCONCAT2(sim_core_read_aligned_,N)
  34 #define sim_core_write_aligned_N XCONCAT2(sim_core_write_aligned_,N)
  35 #define sim_core_read_unaligned_N XCONCAT2(sim_core_read_unaligned_,N)
  36 #define sim_core_write_unaligned_N XCONCAT2(sim_core_write_unaligned_,N)
  37
  38 /* TAGS: sim_core_read_aligned_1 sim_core_read_aligned_2 */
  39 /* TAGS: sim_core_read_aligned_4 sim_core_read_aligned_8 */
  40 /* TAGS: sim_core_read_aligned_word */
  41
  42 INLINE_SIM_CORE(unsigned_N)
  43 sim_core_read_aligned_N(sim_cpu *cpu,
  44                         sim_cia cia,
  45                         sim_core_maps map,
  46                         unsigned_word xaddr)
  47 {
  48   sim_cpu_core *cpu_core = CPU_CORE (cpu);
  49   sim_core_common *core = &cpu_core->common;
  50   unsigned_N val;
  51   sim_core_mapping *mapping;
  52   address_word addr;
  53   if (WITH_XOR_ENDIAN)
  54     addr = xaddr ^ cpu_core->xor[(sizeof(unsigned_N) - 1) % WITH_XOR_ENDIAN];
  55   else
  56     addr = xaddr;
  57   mapping = sim_core_find_mapping (core, map,
  58                                    addr,
  59                                    sizeof (unsigned_N),
  60                                    read_transfer,
  61                                    1 /*abort*/, cpu, cia);
  62 #if (WITH_DEVICES)
  63   if (WITH_CALLBACK_MEMORY && mapping->device != NULL) {
  64     unsigned_N data;
  65     if (device_io_read_buffer (mapping->device,
  66                                &data,
  67                                mapping->space,
  68                                addr,
  69                                sizeof (unsigned_N)) != sizeof (unsigned_N))
  70       device_error (mapping->device, "internal error - %s - io_read_buffer should not fail",
  71                     XSTRING (sim_core_read_aligned_N));
  72     val = T2H_N (data);
  73   }
  74   else
  75 #endif
  76     val = T2H_N (*(unsigned_N*) sim_core_translate (mapping, addr));
  77   if (TRACE_P (cpu, TRACE_CORE_IDX))
  78     if (sizeof (unsigned_N) > 4)
  79       trace_printf (CPU_STATE (cpu), cpu,
  80                     "sim-n-core.h:%d: read-%d %s:0x%08lx -> 0x%08lx%08lx\n",
  81                     __LINE__,
  82                     sizeof (unsigned_N),
  83                     sim_core_map_to_str (map),
  84                     (unsigned long) addr,
  85                     (unsigned long) (((unsigned64)(val)) >> 32),
  86                     (unsigned long) val);
  87     else
  88       trace_printf (CPU_STATE (cpu), cpu,
  89                     "sim-n-core.h:%d: read-%d %s:0x%08lx -> 0x%0*lx\n",
  90                     __LINE__,
  91                     sizeof (unsigned_N),
  92                     sim_core_map_to_str (map),
  93                     (unsigned long) addr,
  94                     sizeof (unsigned_N) * 2,
  95                     (unsigned long) val);
  96   return val;
  97 }
  98
  99 /* TAGS: sim_core_read_unaligned_1 sim_core_read_unaligned_2 */
 100 /* TAGS: sim_core_read_unaligned_4 sim_core_read_unaligned_8 */
 101 /* TAGS: sim_core_read_unaligned_word */
 102
 103 INLINE_SIM_CORE(unsigned_N)
 104 sim_core_read_unaligned_N(sim_cpu *cpu,
 105                           sim_cia cia,
 106                           sim_core_maps map,
 107                           address_word addr)
 108 {
 109   int alignment = sizeof (unsigned_N) - 1;
 110   /* if hardwired to forced alignment just do it */
 111   if (WITH_ALIGNMENT == FORCED_ALIGNMENT)
 112     return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment);
 113   else if ((addr & alignment) == 0)
 114     return sim_core_read_aligned_N (cpu, cia, map, addr);
 115   else
 116     switch (CURRENT_ALIGNMENT)
 117       {
 118       case STRICT_ALIGNMENT:
 119         SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map,
 120                          sizeof (unsigned_N), addr,
 121                          read_transfer, sim_core_unaligned_signal);
 122         return -1;
 123       case NONSTRICT_ALIGNMENT:
 124         {
 125           unsigned_N val;
 126           if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr,
 127                                         sizeof(unsigned_N))
 128               != sizeof(unsigned_N))
 129             SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map,
 130                              sizeof (unsigned_N), addr,
 131                              read_transfer, sim_core_unaligned_signal);
 132           val = T2H_N(val);
 133           return val;
 134         }
 135       case FORCED_ALIGNMENT:
 136         return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment);
 137       case MIXED_ALIGNMENT:
 138         sim_engine_abort (CPU_STATE (cpu), cpu, cia,
 139                           "internal error - %s - mixed alignment",
 140                           XSTRING (sim_core_read_unaligned_N));
 141         return 0;
 142       default:
 143         sim_engine_abort (CPU_STATE (cpu), cpu, cia,
 144                           "internal error - %s - bad switch",
 145                           XSTRING (sim_core_read_unaligned_N));
 146         return 0;
 147       }
 148 }
 149
 150 /* TAGS: sim_core_write_aligned_1 sim_core_write_aligned_2 */
 151 /* TAGS: sim_core_write_aligned_4 sim_core_write_aligned_8 */
 152 /* TAGS: sim_core_write_aligned_word */
 153
 154 INLINE_SIM_CORE(void)
 155 sim_core_write_aligned_N(sim_cpu *cpu,
 156                          sim_cia cia,
 157                          sim_core_maps map,
 158                          unsigned_word xaddr,
 159                          unsigned_N val)
 160 {
 161   sim_cpu_core *cpu_core = CPU_CORE (cpu);
 162   sim_core_common *core = &cpu_core->common;
 163   sim_core_mapping *mapping;
 164   address_word addr;
 165   if (WITH_XOR_ENDIAN)
 166     addr = xaddr ^ cpu_core->xor[(sizeof(unsigned_N) - 1) % WITH_XOR_ENDIAN];
 167   else
 168     addr = xaddr;
 169   mapping = sim_core_find_mapping(core, map,
 170                                   addr,
 171                                   sizeof (unsigned_N),
 172                                   write_transfer,
 173                                   1 /*abort*/, cpu, cia);
 174 #if (WITH_DEVICES)
 175   if (WITH_CALLBACK_MEMORY && mapping->device != NULL) {
 176     unsigned_N data = H2T_N (val);
 177     if (device_io_write_buffer (mapping->device,
 178                                 &data,
 179                                 mapping->space,
 180                                 addr,
 181                                 sizeof (unsigned_N), /* nr_bytes */
 182                                 cpu,
 183                                 cia) != sizeof (unsigned_N))
 184       device_error (mapping->device, "internal error - %s - io_write_buffer should not fail",
 185                     XSTRING (sim_core_write_aligned_N));
 186   }
 187   else
 188 #endif
 189     *(unsigned_N*) sim_core_translate (mapping, addr) = H2T_N (val);
 190   if (TRACE_P (cpu, TRACE_CORE_IDX))
 191     if (sizeof (unsigned_N) > 4)
 192       trace_printf (CPU_STATE (cpu), cpu,
 193                     "sim-n-core.h:%d: write-%d %s:0x%08lx <- 0x%08lx%08lx\n",
 194                     __LINE__,
 195                     sizeof (unsigned_N),
 196                     sim_core_map_to_str (map),
 197                     (unsigned long) addr,
 198                     (unsigned long) (((unsigned64)(val)) >> 32),
 199                     (unsigned long) val);
 200     else
 201       trace_printf (CPU_STATE (cpu), cpu,
 202                     "sim-n-core.h:%d: write-%d %s:0x%08lx <- 0x%0*lx\n",
 203                     __LINE__,
 204                     sizeof (unsigned_N),
 205                     sim_core_map_to_str (map),
 206                     (unsigned long) addr,
 207                     sizeof (unsigned_N) * 2,
 208                     (unsigned long) val);
 209 }
 210
 211 /* TAGS: sim_core_write_unaligned_1 sim_core_write_unaligned_2 */
 212 /* TAGS: sim_core_write_unaligned_4 sim_core_write_unaligned_8 */
 213 /* TAGS: sim_core_write_unaligned_word */
 214
 215 INLINE_SIM_CORE(void)
 216 sim_core_write_unaligned_N(sim_cpu *cpu,
 217                            sim_cia cia,
 218                            sim_core_maps map,
 219                            address_word addr,
 220                            unsigned_N val)
 221 {
 222   int alignment = sizeof (unsigned_N) - 1;
 223   /* if hardwired to forced alignment just do it */
 224   if (WITH_ALIGNMENT == FORCED_ALIGNMENT)
 225     sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val);
 226   else if ((addr & alignment) == 0)
 227     sim_core_write_aligned_N (cpu, cia, map, addr, val);
 228   else
 229     switch (CURRENT_ALIGNMENT)
 230       {
 231       case STRICT_ALIGNMENT:
 232         SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map,
 233                          sizeof (unsigned_N), addr,
 234                          write_transfer, sim_core_unaligned_signal);
 235         break;
 236       case NONSTRICT_ALIGNMENT:
 237         {
 238           unsigned_N val = H2T_N (val);
 239           if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &val, addr,
 240                                          sizeof(unsigned_N))
 241               != sizeof(unsigned_N))
 242             SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map,
 243                              sizeof (unsigned_N), addr,
 244                              write_transfer, sim_core_unaligned_signal);
 245           break;
 246         }
 247       case FORCED_ALIGNMENT:
 248         sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val);
 249         break;
 250       case MIXED_ALIGNMENT:
 251         sim_engine_abort (CPU_STATE (cpu), cpu, cia,
 252                           "internal error - %s - mixed alignment",
 253                           XSTRING (sim_core_write_unaligned_N));
 254         break;
 255       default:
 256         sim_engine_abort (CPU_STATE (cpu), cpu, cia,
 257                           "internal error - %s - bad switch",
 258                           XSTRING (sim_core_write_unaligned_N));
 259         break;
 260       }
 261 }
 262
 263
 264 /* NOTE: see start of file for #define of these macros */
 265 #undef unsigned_N
 266 #undef T2H_N
 267 #undef H2T_N
 268 #undef sim_core_read_aligned_N
 269 #undef sim_core_write_aligned_N
 270 #undef sim_core_read_unaligned_N
 271 #undef sim_core_write_unaligned_N